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2/9 - 2/10 light snow observations


Zelocita Weather

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The euro gives much of the area 1/2" of snow, NW areas up to 1"....so i definitely would stick to my call of around an inch. At this point, there really is nothing to support a 2-4" snowfall, and not really a 1-3" snowfall. For NYC/NE NJ, the euro is 1/2". The RGEM is 1/2". The GFS is around 1". The NAM is barely 1/2". A coating to an inch would be a good call, though I think the euro is underdone just a tad and we do get an inch here. Overall, just a little of the white to freshen up

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The euro gives much of the area 1/2" of snow, NW areas up to 1"....so i definitely would stick to my call of around an inch. At this point, there really is nothing to support a 2-4" snowfall, and not really a 1-3" snowfall. A coating to an inch would be a good call, though I think the euro is underdone just a tad and we do get an inch here. Overall, just a little of the white to freshen up

I would lean towards the GFS nam and RGEM on QPF thr euro has been very bad on QPF on northern stream dominant events all year

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The euro gives much of the area 1/2" of snow, NW areas up to 1"....so i definitely would stick to my call of around an inch. At this point, there really is nothing to support a 2-4" snowfall, and not really a 1-3" snowfall. A coating to an inch would be a good call, though I think the euro is underdone just a tad and we do get an inch here. Overall, just a little of the white to freshen up

WRONG, 4km NAM, GFS, and GEFS is 0.1 to 0.25 QPF

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I would lean towards the GFS nam and RGEM on QPF thr euro has been very bad on QPF on northern stream dominant events all year

Yep I agree....in this case though the euro's 1/2" is supported by pretty much all of the other models, although the SREF, GFS, and hi-res NAM are about 1". To be honest, this is one of those events that I think barely deserves a thread and will be remembered as just a little snow that we wipe away lol
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That's a weather bell image

In looking closer, still not sure I see where a 1011 low throws much back. Precip is over by 4AM Monday and if you at that site's "Total Accumulated Precipitation" sequence, it doesn't appear to me to add any precip over NYC after 6z on Monday. call me crazy.

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I've always hated the 1"-3" forecast.  That's a huge percentage difference.  And 1" is generally just a nuisance, unless it happens in a squall.  But 3" can be a fairly high impact event.  I think forecasters should try to stick to narrower ranges.  If they bust, they bust.  But in the long run they are going to be giving a more accurate indication of what they expect.

 

Soundings look pretty cold aloft.  But I still wouldn't go higher than 12 or 13: 1.  Too many times it just doesn't work out to go higher, even when everything seems lined up.  The 12z CMC and Euro were pretty dry, so I'm thinking .1 - .15" QPF.  That works out to a forecast of 1"-2" of snow.  Based on 18z and 0z data, I would consider changing that expectation... possibly to 2"-3" if guidance trends a little wetter.

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I've always hated the 1"-3" forecast. That's a huge percentage difference. And 1" is generally just a nuisance, unless it happens in a squall. But 3" can be a fairly high impact event. I think forecasters should try to stick to narrower ranges. If they bust, they bust. But in the long run they are going to be giving a more accurate indication of what they expect.

Soundings look pretty cold aloft. But I still wouldn't go higher than 12 or 13: 1. Too many times it just doesn't work out to go higher, even when everything seems lined up. The 12z CMC and Euro were pretty dry, so I'm thinking .1 - .15" QPF. That works out to a forecast of 1"-2" of snow. Based on 18z and 0z data, I would consider changing that expectation... possibly to 2"-3" if guidance trends a little wetter.

Thank you! that's my thinking too.... Hearing 1-3" always frustrates me. There is a big difference between the totals. My pet peeve is 4-8" lol. 4" of snow is a solid snowfall, but not too big of a deal. 8" is a major snow event

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Thank you! that's my thinking too.... Hearing 1-3" always frustrates me. There is a big difference between the totals. My pet peeve is 4-8" lol. 4" of snow is a solid snowfall, but not too big of a deal. 8" is a major snow event

A two inch difference isn't big. 

 

I think 1 to 3 inches is a good call at this point.

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Thank you! that's my thinking too.... Hearing 1-3" always frustrates me. There is a big difference between the totals. My pet peeve is 4-8" lol. 4" of snow is a solid snowfall, but not too big of a deal. 8" is a major snow event

Huge pet peeve with those forecasts because that's a huge difference when you're talking delays, cancellations, and other issues. There's even more discrepancy when we see 5-10, 6-12, 10/12-18, and various other ranges. It reminds me of when they made fun of March 2001 with the potential for 3 to 33 inches of snow. Lower the range as more information comes about and we get closer to a storm. 

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